American Thoracic Society Documents 401 Figure 2. Algorithm forinitiating empiric antibi-otic therapy for hospital-acquired pneumonia (HAP),ventilator-associated pneu-monia (VAP), and health-care-associatedpneumonia(HCAP). Figure 2.
One milligram is one thousandth of a gram and one thousand micrograms. A milligram is generally abbreviated as mg. MICROGRAM. One microgram is one millionth of a gram and one thousandth of a milligram. It is usually abbreviated as mcg or ug. Mcg and ug are the same.
26 Followers. A. One milligram (mg) is equal to 1,000 micrograms (mcg). Therefore, if you were taking 300 micrograms of melatonin then you would need to find a product that is 0.3 milligrams of melatonin. The highest amount of melatonin found over-the-counter is 3 milligrams or 3,000 micrograms.6 Followers. A. One milligram (mg) is equal to 1,000 micrograms (mcg). Therefore, if you were taking 300 micrograms of melatonin then you would need to find a product that is 0.3 milligrams of melatonin. The highest amount of melatonin found over-the-counter is 3 milligrams or 3,000 micrograms.